Ccw: /* Example */

2015-02-11T16:35:16Z

Example

← Older revision		Revision as of 16:35, 11 February 2015
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	This example creates a button. The button has two functions attached to it, one is triggered when user clicks the button (to change text on the button) and the other one is triggered when the text has changed (which sets the text back to the old text).		This example creates a button. The button has two functions attached to it, one is triggered when user clicks the button (to change text on the button) and the other one is triggered when the text has changed (which sets the text back to the old text).
	<syntaxhighlight lang="lua">		<syntaxhighlight lang="lua">
	addEventHandler ( "onClientResourceStart", getResourceRootElement( ~~getThisResource( )~~ ),		addEventHandler ( "onClientResourceStart", getResourceRootElement(),
	function( )		function( )
	--create a button object		--create a button object

50p: New page: NOTOC You can use this method to attach a function to a sham event which is triggered when text changes. The func...

2009-03-01T03:29:39Z

New page: <pageclass class="client" subcaption="GUI Class method"></pageclass> __NOTOC__ You can use this method to attach a function to a sham event which is triggered when text changes. The func...

New page

<pageclass class="client" subcaption="GUI Class method"></pageclass>
__NOTOC__

You can use this method to attach a function to a sham event which is triggered when text changes. The function you pass to this method will be triggered whenever button text changes (when [[GUI_Classes/GUISharedFuncs:Text|object:Text]] is used)

==Syntax==
<syntaxhighlight lang="lua">
bool Button:AddOnTextChanged ( function func )
</syntaxhighlight>

===Required Arguments===
*'''func:''' the function you want to add to a list of functions triggered when text changes
:<syntaxhighlight lang="lua">function func( buttonObject btn, string oldText, string newText )</syntaxhighlight>
:Parameters which are passed to this function
:*'''btn:''' button object which was created with [[GUI_Classes/Button:Create|Button:Create]] and the function was attached to
:*'''oldText''' string containing old text before the text was changed
:*'''newText''' string containing new text of the button

===Returns===
*'''true''' if function was added successfully
*'''false''' otherwise

==Example==
This example creates a button. The button has two functions attached to it, one is triggered when user clicks the button (to change text on the button) and the other one is triggered when the text has changed (which sets the text back to the old text).
<syntaxhighlight lang="lua">
addEventHandler ( "onClientResourceStart", getResourceRootElement( getThisResource( ) ),
function( )
--create a button object
local button = Button:Create( 0.7, 0.1, 0.2, 0.1, "Hello", true );

-- and attach a function to the button which changes its text
button:AddOnClick( changeMyText );

-- add myTextHasChanged to the list of triggered functions when text changes
button:AddOnTextChanged( myTextHasChanged );
end
)

--setup a function to change the text
function changeMyText ( )
local text = button:Text( ) --get the text from the button
if text == "Hello" then
-- if text of button was "Hello", change it to "World!"
button:Text( "World!" );
button:Enabled( false );
end
end

function myTextHasChanged( btn, oldText, newText )
-- if new text is "World!" then set a timer which will change it back to old text (in this case "Hello")
-- and enable the button
if newText == "World!" then
setTimer( btn:Text, 2500, 1, oldTex );
setTimer( btn:Enabled, 2500, 1, true );
end
end

</syntaxhighlight>

==See Also==
[[GUI_Classes|Back to GUI Classes page]]
{{GUI_Classes_allfunctions}}

GUI Classes/Button:AddOnTextChanged - Revision history

Ccw: /* Example */

50p: New page: __NOTOC__ You can use this method to attach a function to a sham event which is triggered when text changes. The func...

50p: New page: NOTOC You can use this method to attach a function to a sham event which is triggered when text changes. The func...